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Zack is a Founding Engineer at Tetrate where he works with some of the largest enterprises in the world to adopt Envoy and Istio. Zack was one of the earliest engineers on the Istio project at Google, sat multiple terms on the project’s Steering Committee, and co-authored Istio: Up and Running (O'Reilly Media, 2019). He works actively with the National Institute of Standards and Technology (NIST) on Next Generation Access Control and co-authors the series of NIST Special Publications defining the standards for microservice security and zero trust for the US Federal government – including NIST SP 800-204A, NIST SP 800-204B, and NIST SP 800-207A (upcoming). Before Tetrate, Zack worked across Google Cloud Platform on its central resource hierarchy, service management, identity & access management systems, as well as Google’s internal mesh that Istio draws from.